51350449 has 4 divisors (see below), whose sum is σ = 51430464. Its totient is φ = 51270436.

The previous prime is 51350447. The next prime is 51350459. The reversal of 51350449 is 94405315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51350449 - 2¹ = 51350447 is a prime.

It is a super-2 number, since 2×51350449² = 5273737225003202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51350449.

It is not an unprimeable number, because it can be changed into a prime (51350441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39037 + ... + 40330.

It is an arithmetic number, because the mean of its divisors is an integer number (12857616).

Almost surely, 2^51350449 is an apocalyptic number.

It is an amenable number.

51350449 is a deficient number, since it is larger than the sum of its proper divisors (80015).

51350449 is an equidigital number, since it uses as much as digits as its factorization.

51350449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80014.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 51350449 is about 7165.9227598405. The cubic root of 51350449 is about 371.6904606036.

The spelling of 51350449 in words is "fifty-one million, three hundred fifty thousand, four hundred forty-nine".